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- Barnyardgrass
- panicle/spike, chickenfoot seed head
- No ligual no aurile, no hairs
- summer annual
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- Crabgrass
- memberous ligual
- no aricles
- mostly annual
- panicle head
- seed: 2.4 mm long grass like
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- Fall Panicum
- fibrious ligual, no aricles
- annual
- smooth swollen nodes
- basal against the ground
- lance shaped leaf blades
- panicale
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liguale = row of short hair
ariclues = none
fine hairs on upper side of leaf
- giant foxtail
- summer annual
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Slender seedlings
hairy ligual and sheath
upper leaf surface is smooth
little spike
- Green Foxtail
- Summer annual
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rhizoms
membranous ligual
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membranous ligual
aricles
rhizoms
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- shatter cane
- summer annual
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- Wooly Cupgrass
- summer annual
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- Yellow nutsedge seed
- perennial
- also repro by tubers
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- Canada thistle seed
- perennial
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- Common chickweed seed
- Winter annual
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- Common Ragweed seed
- Summer Annual
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- Giant ragweed
- summer annual
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- Eastern black nightshade
- summer annual
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marestail
summer annual or biennial broadleaf plant.
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- Lambsquarter
- Summer annual
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- Morningglories
- summer annual / perennial
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Palmer Ameranth
Summer annual
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Pokeberry / pokeweed
Annual
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- purple deadnettle
- annual/biennial
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water hemp
- summer annual
- looks like pigweed with oblong leaves
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wild mustard
winter annual
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effects of herbicde group 5, 6, and 7 on corn and beans
- photosystem II inhibitors
- necrotic and rolling edges
- beans will drop leaves
- systemic
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effects of herbicde group 3 and 15 on corn and beans
- seeding root and shoot inhibitors
- root= stunting and discoloration, roots are prunned clubbed or calused
- shoot = heart shaped leaves or buggy whipped
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effects of herbicde group 4 on corn and beans
- synthetic auxins
- cupping / twisting
- like 2,4-d
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effects of herbicde group 14 and 22 on corn and beans
- membrane disrupters and photosystem I inhibitors
- splotchy leaf burn
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effects of herbicde group 27 and 28 on corn and beans
- pigment inhibitors
- white
- command/balance
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effects of herbicde group 1 on corn and beans
- grass growning point disintegrates
- doesn't affect broadleaves
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effects of herbicde group 2 and 9 on corn and beans
- Ammino acid sythesis inhibitor
- purple soybean veins
- bottle brush corn roots
- Corn: node stacking, rippleing and chlorosis
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effects of herbicde group 10 on corn and beans
- Nitrogen metabolism inhibitors
- necrotic (old leaves), pale green (new leaves), spots where herbicide hit
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VC in beans
unrolled unifoliates
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V1 in beans
first trifoliate
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R1 in beans
- beginning flowering
- one open flower at any node on the main stem
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R2 in beans
- Full flowering
- open flower at one of the two uppermost nodes on the main stem with a fully developed trioliolate leaf node
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R3 in beans
- Beginning pod
- pod is 3/16 inch long on one of four uppermost nodes
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R4 in beans
- Full pod
- pod is 3/4 inch long on one of four uppermost nodes on the main stem
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R5 in beans
- Beginning seed
- seed is 3mm long in the pod at one of the four uppermost nodes
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R6 in soybeans
- Full seed
- pod containing green seed that fills the pod cavity at one of the four uppermost nodes
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R7
- Beginning maturity
- one normal pod on the main stem that has reached its mature pod color (brown or tan)
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R8
- Full Maturity
- 95% of pods are tan or brown
- need 5-10 drying days before harvest at 15% moisture
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Feeke's 2 and 3
tillering
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Feeke's 6
- jointing
- first node visible at the base of the shoot
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Feeke's 10
- the boot stage
- when you can see the head develop just below the flag leaf
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Feeke's 8
Flag leaf emergence
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Feeke's 10.5.1
beginning flowering
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Feeke's 10.5.3
flowering ends
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Feeke's 11.3
kernals harden
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Phosphourus
H2PO4- HPO42-
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